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"""
Database connection and session management
"""
from contextlib import asynccontextmanager
from typing import AsyncGenerator
from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker, create_async_engine
from ..config import settings
from .logging import get_logger
logger = get_logger(__name__)
# Create async engine
engine = create_async_engine(
settings.database_url,
echo=settings.app_env == "local",
pool_pre_ping=True,
pool_size=10,
max_overflow=20,
)
# Create async session factory
async_session_factory = async_sessionmaker(
engine,
class_=AsyncSession,
expire_on_commit=False,
)
@asynccontextmanager
async def get_db_session() -> AsyncGenerator[AsyncSession, None]:
"""Get database session with automatic cleanup"""
async with async_session_factory() as session:
try:
yield session
await session.commit()
except Exception:
await session.rollback()
raise
finally:
await session.close()
async def init_database() -> None:
"""Initialize database tables"""
from ..models import Base
logger.info("Initializing database...")
async with engine.begin() as conn:
await conn.run_sync(Base.metadata.create_all)
logger.info("Database initialized successfully")
async def close_database() -> None:
"""Close database connections"""
logger.info("Closing database connections...")
await engine.dispose()
logger.info("Database connections closed")
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